feat(svelte) add fitViewOptions, closes #3440

packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte

@@ -23,6 +23,7 @@
   export let nodes: $$Props['nodes'];
   export let edges: $$Props['edges'];
   export let fitView: $$Props['fitView'] = undefined;
+  export let fitViewOptions: $$Props['fitViewOptions'] = undefined;
   export let minZoom: $$Props['minZoom'] = undefined;
   export let maxZoom: $$Props['maxZoom'] = undefined;
   export let initialViewport: Viewport = { x: 0, y: 0, zoom: 1 };
@@ -79,6 +80,10 @@
       store.fitViewOnInit.set(fitView);
     }
 
+    if (fitViewOptions) {
+      store.fitViewOptions.set(fitViewOptions);
+    }
+
     updateStore(store, {
       nodeTypes,
       edgeTypes,